Classification of Short-Time Power Quality Disturbance Signals Based on Generalized S-Transform
Peng Jian-chun · Power System Technology · 2009
Based on generalized S-transform,a classification method for short-time power quality disturbance signals is proposed.First,the generalized S-transform is applied to short-time power quality disturbance signals to obtain modulus matrix;then five kinds of statistic eigenvalues are extracted from the modulus matrix;and then by use of decision tree,the subsumption of disturbance signals is performed to implement automatic classification of short-time power quality disturbance signals.Simulation results show that it is not sensitive to noises and its recognition rate is high,so it is suitable to the analysis of power quality disturbance signals in actual power systems.